package com.qf.controller;

import com.qf.pojo.User;
import com.qf.service.AdminService;
import com.qf.service.impl.AdminServiceImpl;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/admin")
public class AdminController extends BaseServlet{

    /**
     * 管理员登录
     * @param request
     * @param response
     * @return
     */
    public String login(HttpServletRequest request, HttpServletResponse response) {

        //1. 获取参数
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        //2. 判断用户名密码不为空, 如果为空跳转到登录页面
        if (username == null || password == null){
            return "redirct:" + request.getContextPath() +"/admin/login.jsp";
        }

        //3. 调用service校验用户名密码
        AdminService adminService = new AdminServiceImpl();
        User user = adminService.login(username, password);



        //4. 根据结果判断进行重定向操作
        if (user != null) {
            //5. 将登录成功后的用户对象放入tomcat的session会话中一直携带
            request.getSession().setAttribute("admin", user);
            //跳转到管理员首页
            return "redirect:" + request.getContextPath() + "/admin/admin.jsp";
        } else {
            //用户名, 密码不正确, 跳转到登录页面重新登录
            return "redirct:" + request.getContextPath() +"/admin/login.jsp";
        }


    }
}
